Since Gas Welding & Cutting are processes that use fuel gases and oxygen to carry out welding and cutting of different type of metals, they are also called Oxy-fuel welding & cutting in industrial terms. To increase the temperature of the flame used for welding and cutting, pure oxygen is used in the process instead of air, which allows faster melting of both the metals that are to be joined together with the welding job. welding machine supplier in Udaipur.